Unlaping indeks
- Or
- Orbit
- Orbits
- Order of magnitude
- Order of magnitude/x
- Ordered list
- Ordertv
- Ordinal
- Ordinal/th
- Ordo
- Ordobisiyano graphical timeline
- Ordomag
- Ordomag/x
- Orfud
- OrganicBox
- OrganicBox atom
- Organization infoboxes
- Organization of the Black Sea Economic Cooperation (BSEC)
- Organohalide-stub
- Oriental Mindoro
- Original research
- Orlando Magic roster
- Orphaned
- Orphaned fairuse not replaced
- Orphaned unfree not replaced
- Orthodox Hierarchs
- Oryentasyong seksuwal